ios - 如何访问 UICollectionView 中选定单元格的索引

Question

我的 UICollectionView 中有几个单元格，我在其中创建按钮:

func collectionView(collectionView: UICollectionView, cellForItemAtIndexPath indexPath: NSIndexPath) -> UICollectionViewCell {
    let cell = collectionView.dequeueReusableCellWithReuseIdentifier("cell", forIndexPath: indexPath)
    let button = UIButton(frame: CGRectMake(0, 0, cell.bounds.size.width, cell.bounds.size.height))
    button.setTitle("ButtonTitle")
    button.addTarget(self, action: "buttonAction:", forControlEvents: UIControlEvents.TouchUpInside)
    return cell
}

然后我向按钮添加一个 Action ，该按钮切换到一个新的 ViewController，将按钮的名称设置为标题:

func buttonAction(sender: AnyObject?) {
    let vc = NewViewController()
    vc.title = sender!.titleLabel!!.text
    revealViewController().pushFrontViewController(vc, animated: true)
}

但我现在还想访问所选单元格/按钮的索引。有人知道怎么做吗？

Answer 1

喜欢

第一步

 button.tag = indexPath.row
 button.setTitle("ButtonTitle")
 button.addTarget(self, action: "buttonAction:", forControlEvents: UIControlEvents.TouchUpInside)

第二步

func buttonAction(sender: UIButton) {

    if let sendertitle = sender.titleLabel?.text {

        let vc = self.storyboard?.instantiateViewControllerWithIdentifier("NewViewControllerIdentifier") as? NewViewController
        vc.title = sendertitle

        revealViewController().pushFrontViewController(vc, animated: true)
    }
}

选择 -- 2

如果你想实现简单的方法，就喜欢

func collectionView(collectionView: UICollectionView, cellForItemAtIndexPath indexPath: NSIndexPath) -> UICollectionViewCell {

    let cell = collectionView.dequeueReusableCellWithReuseIdentifier("cell", forIndexPath: indexPath)

    return cell
}

在 didSelect 调用上

func collectionView(collectionView: UICollectionView, didSelectItemAtIndexPath indexPath: NSIndexPath) {

    let vc = self.storyboard?.instantiateViewControllerWithIdentifier("NewViewControllerIdentifier") as? NewViewController
    vc.indexPath = indexPath.row

    revealViewController().pushFrontViewController(vc, animated: true)
 }